Pulp-beater.



No. 766,563. PATENTED AUG. 2, 1904. W. WHITE.

PULP BEATER.

APPLICATION FILED FEB. 11. 1904.

N0 MODEL. 2 BHEBTB-SHEBT 1.

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H0 MODEL.

PATENTED 'AUG. 2, 1904.

W. WHITE.

PULP BEATER.

APPLICATION FILED FEB. 11. 1904.

2.2HEBT8-SHEET 2.

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Patented August 2, 1904.

UNITED STATES PATENT OFFICE.

VALLACE lVHITE, OF LAXVRENCE, MASSACHUSETTS.

PULP-BEATER.-

SPECIFICATION forming part of Letters Patent No. 766,563, dated August2, 1904.

Application filed February 11, 1904. Serial No. 193,038- (No model.)

To all whom, it H'l/(l/Z/ concern:

Be it known that I, WALLAoE TVHITE, of Lawrence, county of Essex, Stateof Massachusetts, have invented an Improvement in Pulp-Beaters, of whichthe following description, in connection with the accompanying drawings,is a specification, like characters on the drawings representing likeparts.

When the beaten pulp and water is drained from a pulp-beater, a largeproportion of the pulp is left on the bottom of the tub, which isusually pushed into its outlet with scrapers or washed out with ahose-pipe or by letting water into the tub from a hydrant. Thisoperation takes considerable time and causes a corresponding delay inthe operation of the machine. Furthermore, in the well-known horizontalform of beater in general use having the central vertical mid-feather itis necessary to stir the pulp frequently in order that the pulp may bebeaten evenly; otherwise the portion of the pulp next the midfeatherwould be beaten more rapidly than that next the sides of the tub.

My invention has for its object to provide a means for rapidly andthroughly washing out the tub and removing all the pulp therefrom andrendering the use of scrapers and like devices unnecessary andincidentally to provide a means whereby the speed of the flow of theportion of the pulp adjacent the walls of the tub may be accelerated andthe pulp washed during the process of beating, so that the necessity ofstirring the pulp continually is to a great extent avoided and therapidity of the beating process greatly facilitated. I accomplish thisobject by providing in the walls of the tub adjacent its bottom a seriesof nozzles which are adapted and ar ranged to direct ajet of waterhorizontally in any direction within an angle of one hundred and eightydegrees.

For an understanding of the particular means which .1 preferablyemployin carrying out the above object Iwill now refer to theaccompanying drawings, in which Figure 1 is a plan view of abeating-engine of the ordinary type provided with my invention. Fig. 2is a detached side view of one of the nozzle-casings. Fig. 3 is acentral vertical section thereof. Fig. 4 is a horizontal section on theline we of Fig. 2. Fig. 5 is a section'on the line 1/ y of Fig. 2.

The tub of the beating-engine illustrated has the usual parallel sidewalls a, semicircular end walls, and anintermediate mid-feather .7),with the roll 0 in the usual position. A series of casings or chambers(l are secured to the sides of the tub adjacent the bottom thereof, onebeing located at each end of the straight portion of each of the twoside walls, as shown in 1, although they may be arranged in differentpositions and their number be varied without departing from the spiritof my invention.

A main water-supply pipe leads to a supply-chambere, which is locatedbelow the bottom of the tub and centrally thereof, as indicated indotted lines, Fig. 1, and branch pipes f lead from said chamber a toeach chamber (Z, so that an approximately equal volume of water may besupplied to each chamber (Z.

As the parts contained in each chamber (Z are identical, a singledescription will suffice for all. Each chamber (Z is connected to theinterior of the tub by a circular passage (1, the lower portion of whichextends as closely as practicable to the upper edge of the usualfilling-strip 1/ in the corner of the tub. The inner end of the passage1/ is beveled oriuade flaring, as indicated at (1 and a packing-ring gis secured to the outer side of the tub about said passage to form awater-tight joint therebetween. Said packing-ring is provided with abeveled face adapted to form a water-tight seat for the face of aspherical valve or nozzle l1. Said nozzle is hollow and is provided witha discharge-port /1 of oblong form, the sides thereof being parallel andits ends semicircular and so arranged that a horizontal plane throughthe geometrical center of the sphere passes through the center of saidport perpendicular to its sides. Two inlet-ports h are also provided inthe opposite side of the nozzle or shell 71. from port it, said ports ifbeing separated by a horizontal bridge 703, the center of whiehis in thehorizontal plane through the center of the shell. Two bosses/1i areformed on the inner surface of the shell it at diametrically oppositepoints, each having an oblong or other shaped aperture having differentdlameters formed therethroughin alinement, and

a correspondingly shaped stem 2' passes through said apertures andthrough a stufling-box Z) in the upper side of the casing (Z, ahand-wheel 2" being secured to the upper end of said stem, so that theshell or nozzle h may be rotated by turning said Wheel. Said hand-wheelis preferably provided with an arrow or other indicating device toindicate the position of the port it. The diameter of the passage 0 issomewhat less than the diameter of the shell it, so that when the vlatter isturned into the dotted position of Fig. 4 the ports h and bwill both be entirely within the chamber (Z, the sides of said portsnext the tub being approximately in the plane of the face of the ring 9.The relative diameter of the shell 7i and ring g and thickness of thewall a of the tub are such that a portion or segment of the sphere orshell h at all times protrudes into the tub beyond the inner surface ofthe walls a, as indicated in Figs. 2, 3, and 4. Said shell is heldagainst the ring g by a head is, borne on the end of an adjusting-screwm, the latter being threaded into the wall of the chamber (Z andarranged so that its center line lies in the horizontal plane throughthe center of the spherical shell it, so that the bridge 71 provides abearing for the head is when the shell is in the position of Figs. 2 and3.

In practice water under pressure will be admitted to the chamber (Z andwill fill the shell h, and when the shell is turnedon its vertical axis,so that both its inlet and outlet ports are within the chamber (Z or thedotted position shown in Fig. l, communication between the chamber (Zand the tub will be completely shut off, and the shell will be firmlypressed against the valve seat or ring 9 by the water, as well as heldagainst it by the bearing in.

If it is desired to wash out the tub, it is only necessary to turn thehand-wheel t" so that a portion or all of the port It is brought intoregister with the passage a, causing a jet of water to be projected orforced into the tub. In this Way the shell it will act as a nozzle aswell as a valve, the jet of water being projected in a directioncorresponding to the position in which the shell is rotated. By reasonof the fact that the shell extends into the tub somewhat beyond theinner walls thereof it will be apparent that a jet of water may beprojected through the port it in a direction approximately, parallelwith the side walls of the tub in either direction and also in anyintermediate direction, as indicated in Fig.1. By making the inner endof passage (0 flaring less obstruction is offered to the water as it isdischarged along the walls of the tub than if the passage a were ofuniform diameter.

In practice the ports are of such size that a large volume of water maybe quickly supplied, and as the water is preferably supplied at a high.pressure it will be delivered into the tub at a high velocity, varyingsomewhat according to the extent to which the port it is opened.

By providing four nozzles /L at the ends of the straight portions of theside walls of the tub a jet of water may be directed over every portionof the bottom of the tub, so that all of the pulp may be washed out ofthe tub without making the use of scrapers or other implementsnecessary. While washing out the tub one of the nozzles may be turned todirect a jet of water against the normal flow of the pulp, so that itwill act as a temporary dam, and then the jet may be turned in theopposite direction, so as to suddenly release the accumulation, therebycausing the pulp to be swept along by the sudden rapid flow of water.

By opening each nozzle so as to direct a jet of water along the sides ofthe tub in the direction of the flow of the pulp the flow of the pulpmay be accelerated adjacent the walls in proportion to the distancewhich it must travel in making a complete circuit of the tub. In thismanner the grinding will be greatly facilitated and the necessity offrequent stirring be avoided. At the same time the pulp will bethoroughly washed by theconstantly-incoming water, the excess ofwater'being drained olf through a screened overflow or outlet.

While the nozzles h protrude into the tub to some extent, their curvedor spherical surfaces do not to any material degree obstruct the flow ofthe pulp or afford a place where the pulp may become lodged, so that theordinary use of the tub is not interfered with in the least.

While I prefer a spherical form of nozzle or valve to one of cylindricalform on account of the fact that it is easier to form a watertight seatfor a spherical/valve than one of cylindrical or other form, yet Iconsider such other forms within the spirit and scope of my invention.

Havingv thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is.

1. In combination with a tub of a pulpbeater having a passage in thewall thereof leading into the tub, said passage having a surroundingseat, a-water-supplying nozzle engaging-said seat and closing saidpassage except through its jet-orifice, and means for varying thehorizontal position of said nozzle to direct a jet in differentdirections in the tub, substantially as described.

2. In combination with the tub of a pulpbeater having a passage in thewall thereof leading into the tub, said passage having a surroundingseat, a water-supplying nozzle engaging said seat and closing saidpassage completely in certain positions, and means permitting movementof said nozzle to bring its jetorifice partly or wholly into registerwith said passage from either side thereof to permit a jet to beprojected in different directions in the tub, substantially asdescribed.

3. In combination with the tub of a pulpbeater having a passage in thewall thereof leading into the tub, said passage having a surroundingseat, a water-supplying nozzle engaging said seat and closing saidpassage completely in certain positions, said nozzle having ajet-orifice of less width than said passage, and means for moving saidnozzle horizontally to direct a jet in different directions from saidpassage, substantially as described.

i. In combination with the tub of a pulpbeater having a passage in itswall, said passage having a surrounding seat, a valve engaging said seatand closing said passage in certain positions thereof, said valve havinga curved portion projecting into the tub, and provided with ajet-orifice and means for swinging said valve horizontally and means forsupplying water to said jet-orifice, substantially as described.

5. In combination with the tub of a pulpbeater having a circular passagethrough its side wall, said passage having an encircling valve-seat, aspherical-faced valve engaging said seat and closing said passage, saidvalve having a jet-orifice through its face, means for swinging saidvalve horizontally to bring said orifice into register with saidpassage, and means for supplying water to said orifice, substantially asdescribed.

6. In combination with the tub of a pulpbeater having a circular passagethrough its side wall, said passage having an encircling valve-seat, aspherical-faced valve engaging said seat, closing said passage andprojecting into the tub beyond the inner surface of said wall, ajet-orifice being formed through said face, means for swinging saidvalve horizontally to bring said orifice into register with saidpassage, and means for supplying water to said orifice, substantially asdescribed.

7. in combination with the tub of a pulpbeater having a circular passagein its side wall, said passage having an encircling valveseat, a hollowspherical valve pressed against said seat, closing said passage, andextending beyond the inner surface of said wall, said valve having ajet-orifice of less width horizontally than the diameter of saidpassage, said orifice registering with said passage, in certainpositions of said valve, means for retating said valve about a verticalaxis, and for supplying water to said orifice, substantially asdescribed.

8. In combination with the tub of a pulpbeater having a passage throughits wall, a valve seated against the outer end of said passage, having acurved face, and a port formed through said face, a casing to whichwater under pressure may be supplied, inclosing said valve, and meansfor swinging said valvehorizontally, substantially as described.

9. In combination with the tub of a pulpbeater having a passage throughits wall, a valve seated against the outer end of said passage, having acurved face, and a port formed through said face of less widthhorizontally than said passage, a casing to which water under pressuremay be supplied, inclosing said valve, and means for swinging said valvehori- Zontally, substantially as described.

10. In combination with the tub of a pulpbeater having a passage throughits wall, flaring at its inner end, a valve seated against the outer endof said passage, having a curved face, and a port formed through saidface, a casing to which water under pressure may be supplied, inclosingsaid valve, and means for swinging said valvehorizontally,substantiallyas described.

11. In combination with the tub of a pulpbeater having a'circularpassage through its wall adjacent its bottom, a spherical hollow valvehaving oppositely-located inlet and outlet ports seated on the outer endof said passage and closing the same, a casing inclosing said valve andconnected to the wall of the tub, and means for supplying water thereto,and means for rotating said valve consisting of a stem extendingvertically through said casing and connected to said valve,substantially as described.

12. In combination with the tub of a pulpbeater having a circularpassage through its wall adjacent its bottom, a spherical hollow valvehaving oppositely-located inlet and outlet ports, seated on the outerend of said passage and closing the same, a casing inclosing said valveand connected to the wall of the tub and means for supplying waterthereto, an adjustable bearing engaging the side of said valve oppositesaid passage and holding it against its seat, and means for rotatingsaid valve on a vertical axis, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

\VALLACE WHI'ITE. WVitnesses:

L. H. HARRIMAN, H. B. .DAvIs.

